Of the known mintages, I have 4 1931-S pennies. 1 is an almost red 63. However, I am sure that the 1922 plain is rarer. I am sure that the VG one I have is a "no D" even if it is a dye #3. I also have a VF-30 dye #3 from ANACS link. I am still not sure if that is a "no D" or a "weak D". (ANACS calls all weak reverses as "weak D' regardless of wether or not there is a D visable.) Hopefully, I can trade one of my sets for an S-VDB this summer.
Never actively collected them but have thousands. Go figure. Rarest mintage wise is 1931-S - I have two. Also have a 1909-S. What about a Wheaties box with a picture of Walter Payton? Would that count? clembo